My penis falling off

I have this constant fear that I will wake up in bed one morning and discover my penis has fallen off during the night? I wake up each morning and grab my penis and sack nervously to confirm they're still there. I wear whitey tighties to give myself that extra feeling of security each day. Also when I walk around the office at work I keep looking down at the floor behind me to make sure I haven't dropped something intimately important to me. I make 10 to 15 trips to the bathroom during the day to confirm my member is still present. I don't think I can take this constant stress every day. Is this normal or a bit unusual?